Answer
$-\frac{3}{2}$
Work Step by Step
$\frac{(4-\sqrt{16})-(-7-20)}{-2(1-4)^{2}}$
=$\frac{(4-4)-(-27)}{-2(-3)^{2}}$
=$\frac{0+27}{-2•9}$
=$\frac{27}{18}$
Reduce.
=$-\frac{3}{2}$
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